According to the Maryland Court of Appeals.
A new ruling makes it easier for anyone attacked by a pit bull or pit bull mix in Maryland to take legal action against the dog's owner.
The Maryland Court of Appeals ruling declares pit bulls as a breed are "inherently dangerous," and the owner of a pit bull or a cross-bred pit that attacks is strictly liable for damages, as is any landlord who rents to a pit bull owner.
From this, which appears to be the decision, we get more clarity:
Upon a plaintiff’s sufficient proof that a dog involved in an attack is a pit bull or a pit bull
cross, and that the owner, or other person(s) who has the right to control the pit bull’s
presence on the subject premises (including a landlord who has a right to prohibit such dogs
on leased premises) knows, or has reason to know, that the dog is a pit bull or cross-bred pit
bull, that person is liable for the damages caused to a plaintiff who is attacked by the dog on
or from the owner’s or lessor’s premises. In that case a plaintiff has established a prima facie
case of negligence. When an attack involves pit bulls, it is no longer necessary to prove that
the particular pit bull or pit bulls are dangerous.
UPDATE: For those that want to play "Pitbull Denialism" along with me, download your handy DINGO card.